2 ?'s about a brake booster

[19mike69]

i bought a booster off of ebay and had a question or two....first one is...
on the front of the booster on the right,there is supposed to be some sort of plastic piece that the rubber hose connects to from the mainfold,right?...mine is missing the little plastic peice...it has the rubber grommet,but not the little angled piece,what is that called and where can i get one?...then where do i run the vacuum hose to,the intake?

secondly....
i cant figure out how this thing even hooks up....it came with the rod that comes from the pedal,but on the back of the booster,above the rod that goes inside the booster,there is a bracket with 2 levers that move and each one has 2 holes in it....how in the world do you get this thing to work?....what goes where?